/**
  * Once payment is completed on an order, set a lock on payments until the next subscription payment period.
  * 
  * @param $user_id int The id of the user who purchased the subscription
  * @param $subscription_key string A subscription key of the form created by @see self::get_subscription_key()
  * @since 1.1.2
  */
 public static function safeguard_scheduled_payments($order_id)
 {
     $order = new WC_Order($order_id);
     $subscription_key = WC_Subscriptions_Manager::get_subscription_key($order_id);
     WC_Subscriptions_Manager::safeguard_scheduled_payments($order->customer_user, $subscription_key);
 }
 /**
  * Records the initial payment against a subscription.
  *
  * This function is called when a gateway calls @see WC_Order::payment_complete() and payment
  * is completed on an order. It is also called when an orders status is changed to completed or
  * processing for those gateways which never call @see WC_Order::payment_complete(), like the
  * core WooCommerce Cheque and Bank Transfer gateways.
  *
  * It will also set the start date on the subscription to the time the payment is completed.
  *
  * @param WC_Order|int $order A WC_Order object or ID of a WC_Order order.
  * @since 1.1.2
  */
 public static function maybe_record_order_payment($order)
 {
     if (!is_object($order)) {
         $order = new WC_Order($order);
     }
     $subscriptions_in_order = self::get_recurring_items($order);
     foreach ($subscriptions_in_order as $subscription_item) {
         $subscription_key = WC_Subscriptions_Manager::get_subscription_key($order->id, self::get_items_product_id($subscription_item));
         $subscription = WC_Subscriptions_Manager::get_subscription($subscription_key);
         // No payments have been recorded yet
         if (empty($subscription['completed_payments'])) {
             // Don't duplicate orders
             remove_action('processed_subscription_payment', 'WC_Subscriptions_Renewal_Order::generate_paid_renewal_order', 10, 2);
             WC_Subscriptions_Manager::update_subscription($subscription_key, array('start_date' => gmdate('Y-m-d H:i:s')));
             WC_Subscriptions_Manager::process_subscription_payments_on_order($order->id);
             WC_Subscriptions_Manager::safeguard_scheduled_payments($order->customer_user, $subscription_key);
             // Make sure orders are still generated for other payments in the same request
             add_action('processed_subscription_payment', 'WC_Subscriptions_Renewal_Order::generate_paid_renewal_order', 10, 2);
         }
     }
 }